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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 230 (5.7L - DTCS P1496 To P2314 - 1500) >> Diagnosis And Testing >> P2273-O2 Sensor 2/2 Signal Stuck Rich >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2013 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
OXYGEN SENSOR WIRING OR CONNECTORS
O2 SENSOR 2/2 SIGNAL CIRCUIT
O2 SENSOR 2/2 RETURN CIRCUIT
O2 SENSOR 2/2
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  STANDARD PROCEDURE  .